soc: st: add STM32L452XC

Adds STM32 L452 soc with L452xC variant. L452 has 160 KB SRAM;
therefore, mpu mem config has been extended; IRQ number is based on
'stm32l452xx.h'.

Signed-off-by: Georgij Cernysiov <g.cernysiov@elco-automation.de>

soc/arm/st_stm32/common/arm_mpu_mem_cfg.h

@@ -57,6 +57,10 @@
 #define REGION_SRAM_0_SIZE REGION_64K
 #define REGION_SRAM_1_START 0x10000
 #define REGION_SRAM_1_SIZE REGION_64K
+#elif CONFIG_SRAM_SIZE == 160
+#define REGION_SRAM_0_SIZE REGION_128K
+#define REGION_SRAM_1_START 0x20000
+#define REGION_SRAM_1_SIZE REGION_32K
 #elif CONFIG_SRAM_SIZE == 192
 #define REGION_SRAM_0_SIZE REGION_128K
 #define REGION_SRAM_1_START 0x20000

soc/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l452xx

@@ -0,0 +1,32 @@
+# Kconfig - ST Microelectronics STM32L452XX MCU
+#
+# Copyright (c) 2018 Georgij Cernysiov
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+if SOC_STM32L452XC
+
+config SOC
+	string
+	default "stm32l452xx"
+
+config NUM_IRQS
+	int
+	default 85
+
+if GPIO_STM32
+
+config GPIO_STM32_PORTD
+	default y
+
+config GPIO_STM32_PORTE
+	default y
+
+config GPIO_STM32_PORTH
+	default y
+
+endif # GPIO_STM32
+
+endif # SOC_STM32L452XC
+

soc/arm/st_stm32/stm32l4/Kconfig.soc

@@ -22,6 +22,9 @@ config SOC_STM32L432XC
 config SOC_STM32L433XC
 	bool "STM32L433XC"
 
+config SOC_STM32L452XC
+	bool "STM32L452XC"
+
 config SOC_STM32L475XG
 	bool "STM32L475XG"